Evidences of Chemical and Physical Changes

Which of the following is an example of both a physical and a chemical change?

• chopping vegetables with a knife

• burning a candle

• dissolving hot cocoa mix in water

• pouring cold water on a hot object

Tags

NGSS.MS-PS1-5

When two liquids are mixed, the container feels cold to the touch. This is evidence of what?

• physical change

• chemical change

• state of matter change

• no change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following would indicate the formation of a new substance?

• A liquid turns to a solid.

• A sample of metal melts.

• Bubbles and fizzing occur.

• A solid dissolves in a liquid.

Tags

NGSS.MS-PS1-2

Which of the following is an example of a physical change?

• an explosion

• a solid stays a solid

• a piece of paper is crumpled

• two liquids are mixed and it warms up

Mrs. McGinnis begins grading papers. She writes on it with a marker. Then, she accidentally tears the paper in half. So, she ends up crumpling the paper into a ball and throws it away. Which are examples of physical changes?

• Writing with marker

• Tearing it in half

• Crumpling it up

• All of the above

Is a change in state (solid, liquid, or gas) evidence for a physical or chemical change?

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-4

Baking a cake is an example of a chemical change.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Is gas being released a sign of a physical or chemical change?

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

Select all that are evidences of a chemical change.

• Light Released

• New Substance

• Gas Released

• Temperature Change

• State Change

Tags

NGSS.MS-PS1-2

Is a change in size evidence for a physical or chemical change?

• Physical Change

• Chemical Change